Automatograph



C. W. DAVISON.

AUTOMATOGRAPH.

APPLICATION F ILED FEB. 12, I920. 1,340,529; Patented y 18, 1920.

2 SHEETS%I I EET 1- 3 L-& L i) C. W. DAVISON.

AUTOMATOGRAPH.

' APPLICATION FILED FEB. 12. 1920.

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CHARLIfi'W. DAV-ISON, OF CHICAGO, ILLINOIS, ASSIGNOR TO WILLIAM T. STEADMEMORIAL CENTER, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

AU'IOMATOGRAPH.

Specification of Letters Patent. r Pate t d pl 1 8 1920 Applicationfiled February 12 1920'. Serial No. 358,077.

To all whom it may concern Be it known that I, CHARLES TV. DAVISON, acitizen of the United States, residing at Chicago. in the county of Cookand State of Illinois, have invented a new and useful Automatograph, ofwhich the following is a specification.

This invention relates to automatographs.

The primary object is to provide a means for assisting in the properspacing of lines when writing. is done by the blind, or by personswriting in the dark.

This and other objects as will appear, ar accomplished by my invention,which is fully described in the following specification and shown in theaccompanying drawings, in which- Figure 1 is a top plan view of mydevice; Fig. 2 is a bottom plan view of the same; Figs. 3, 4: and 5 aresections on the lines 3-3, 4-1, and of Fig. 1; Fig. 6 is a section onthe line 6--6 of Fig. 5 and Figs. 7 and 9 are partial sections on thelines 7-7 and 8-S of Fig. 3.

I hare illustrated as an embodiment of my device an inclined plate .10,supported upon legs 11 and 12, at the upper and lower ends of the plate,respectively. A sheet metal table 13 is adjustably secured to the plate10by means of screws let and 15, as shown in Figs. 2, 5 and (3. A tablet16, or other writing material, is secured to the table by means of astrip 17 and thumb screws 18.

The sides of the plate 10 are rolled upwardly and inwardly as indicatedby 10 to form parallel longitudinal passages which are. tubular in form.A carrier 19 extending across the entire width of the plate 10 ismounted thereon and adapted to slide backward and forward. The carrier19 is formed from a flat piece of metal with a relatively narrow centerpart extending across the width of the plate 10, bridging the tablet 16,with its end edges 20 considerably widened and bent downwardly to reston the sides of the plate 10 to the inside of the rolled edges 10. Eachof the downwardly bent edges 20 is provided with two outwardly benttongues extending into and adapted to slide in the tubular passagesformed bythe rolled sides 10 of the plate 10. These tongues are near theends of the end edges 20 of the carrier 19, the one at the upper orforward end being indicated by 22 and the other by 21.

The forward end of each tubular passage 10 is partially closed by meansof a pin 23 and a circular button 24, against which rests the forwardend of a helical spring 25. The opposite end of this spring bearsagainst a cylindrical block 26, and this in turnagainst the extension 21of the carrier 19. The extension 22 is shorter, to provide clearance forthe spring 25, as shown in Fig. 8. The pin 27 at the lower end of thetubular passage 1O provides a stop for the carrier 19,

It will be understood from the foregoing that the spring constantlytends to force the carrier 19 toward the stop 27. however, is preventedand controlled by a mechanism which. will now be described.

A series of longitudinally spaced holes 28 are provided in thepla-te 10,which serve the purpose of a rack.) The carrier 19 has secured thereto aU-shaped member 29, which has a pin 30 therein, upon which are hingedlymounted the pawls 31 and 32, which are normally pressed toward the rackby means of the springs 33 and 34. The opposite ends of these pawlsterminate in beveled fingers 31 and 32, as shown in Fig. 5. A slide 35is slidably mounted upon the carrier 19. The slide is provided with astop 36 which. limits the distance to which the slide can be pushed tothe right. An inclined trip member 37 is hingedly mounted, by means of apin 38, upon the slides 35. This trip member is free to swingdownwardlyand to the left, except for the spring 2119, which holds it in theposition shown in AS the slide as is moved a the left, trip at depressesthe finger 31 and the pawl 31 is accordingly released from the rack 28.The spring 25 acts to force the carrier 19 back and the pawl 32 dropsinto the next succeeding hole 28. The pawl 31 is now resting upon thespace between the holes of the rack. As the slide is moved still fartherto the left, the trip 37 depresses the finger 32 and the pawl 32 isreleased, thereby permitting the spring 25 to again act and force thecarrier 19 back until the pawl 31 is in em gagement with the hole justreleased by the pawl 32.

The operation of my device is as follows:

This,

A Writing tablet 16 is secured in place and the carrier 19, pushed asfar as possible toward the upper edge of the teeth. The Writers hand isplaced upon the slide 35 and as he writes, the slide is moved to theright, guiding his hand across the paper. The stop 36 indicates that theend of the line has been reached when the Writer. pencil is raised andthe hand, together with the slide 35 moves to the extreme left hand endof the carrier 19. When this occurs,thc mechanism previously describedcauses the pawls to be operated so as to permit the spring to move thecarriers back until the pawl 31 engages the next succeeding notch 28.The Writer now proceeds on the next line, which is separated from thefirst and so on down, until the entire sheet tablet is covered.

IVhile I have shown and described but a single embodiment of myinvention, it is to be understood that it is capable of manymodifications. Changes therefore in the construction and arrangement maybe made without departing from the spirit and scope of the invention asdisclosed in the appended claims, in which it is my intention to claimall novelty inherent in my inventionas broadly as possible in view ofthe prior art.

What I claim as new and desire to secure by Letters Patent is:

1. I11 a device of the character set forth, a plate, means on said platefor attaching a tablet thereto, a carrier adapted to move longitudinallyof said plate and over said tablet, a slide on said carrier adapted tomove transversely of said plate, and means for moving the carrierrearwardly a predetermined distance at each actuation of the slide.

2. In a device of the character set forth, a plate having longitudinalrolled edges, means on said plate for attaching a tablet thereto, acarrier adapted to slide in said rolled edges, springs in said rollededges tending to press said carrier rearwardly, a

, slide on said carrier adapted to move transversely of said plate, anotched rack extendmg longitudinally of sald plate, a pawl mounted onthe carrier and adapted to ening longitudinally of said plate and a plurality or PitWlS hingedly mounted upon the carrier and adapted to engagethe notches of said rack one at a time, and means operable by said slideto successively release said paivls so as to permit said springs toforce said carrier rearwardly one notch at a time.

l. In a device of the character set forth, a plate having longitudinallyrolled edges, means on said plate for attaching a tablet thereto, acarrier adaptedto slide in said rolled edges, springs in said rollededges tending to press said carrier rearwardly, a slide on said carrieradapted to move transversely oi said plate, a notched rack extendinglongitudinally of said plate and a plurality of paivls hingedly mountedon the carrier and adapted to engage the notches of said rack one at atime, said pawl having operating fingers lying side by side in the sameplane transversely of the plate and a trip on said slide adapted tosuccessively engage said operating fingers.

CHARLES W. DAVISON.

